BCM4354 Data Sheet
LNLDO
LNLDO
Table 48: LNLDO Specifications
Specification
Notes
Min.
Typ.
Max. Units
Input supply voltage, Vin
Min. = 1.2Vo + 0.15V = 1.35V dropout
1.3
1.35
1.5
V
voltage requirement must be met under
maximum load.
Output Current
–
0.1
1.1
–
150
mA
V
Output Voltage, Vo
Programmable in 25 mV steps.
Default = 1.2V
1.2
1.275
Dropout Voltage
At maximum load
–
–
150
+4
–
mV
%
Output Voltage DC Accuracy Includes line/load regulation
–4
–
–
Quiescent current
No load
44
970
–
µA
µA
Max. load
–
990
5
Line Regulation
Vin from (Vo + 0.1V) to 1.5V, max. load
–
mV/V
Load Regulation
Leakage Current
Output Noise
Load from 1 mA to 150 mA
Power-down
–
–
–
0.02
–
0.05
10
mV/mA
µA
@30 kHz, 60–150 mA load Co = 2.2 µF
@100 kHz, 60–150 mA load Co = 2.2 µF
–
60
35
nV/rt Hz
nV/rt Hz
PSRR
@ 1kHz, Input > 1.35V, Co= 2.2 µF, Vo =
1.2V
20
–
–
dB
LDO Turn-on Time
LDO turn-on time when rest of chip is up
–
140
2.2
180
4.7
µs
0.5a
External Output Capacitor, Total ESR (trace/capacitor):
Co
µF
5 mꢀ–240 mꢀ
External Input Capacitor
Only use an external input capacitor at the –
VDD_LDO pin if it is not supplied from
CBUCK output.
1
2.2
µF
Total ESR (trace/capacitor): 30 mꢀ–200 mꢀ
a. Minimum capacitor value refers to the residual capacitor value after taking into account the part–to–part
tolerance, DC–bias, temperature, and aging.
Broadcom®
October 15, 2014 • 4354-DS109-R
Page 163
BROADCOM CONFIDENTIAL
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